Spot rubber closed unchanged on Monday. RSS 4 was quoted steady at ₹128.50 a kg, by traders and the Rubber Board. The transactions continued to remain low. RSS 3 (spot) declined to ₹106 (106.85) at Bangkok. Spot rubber rates (₹/kg): RSS-4: 128.50 (128.50); RSS-5: 124 (124); ISNR 20: 116 (116) and Latex (60% drc): 101.50 (101.50).